chore(package): update lint-staged to version 6.0.0 (#3)

Author: greenkeeper[bot]

package.json

@@ -21,7 +21,7 @@
     "husky": "^0.14.3",
     "jest": "^21.0.0",
     "jest-cli": "^21.0.0",
-    "lint-staged": "^5.0.0",
+    "lint-staged": "^6.0.0",
     "nsp": "^3.1.0",
     "prettier": "^1.7.0",
     "yeoman-assert": "^3.1.0",